Seagate HAWK 4, Product Manual

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Product Manual - Hawk 4 Family SCSI-2 (Volume 1), Rev. F 45
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Only nonshielded cable connectors are applicable. A 50 conductor flat cable or 25 twisted pair cable shall be
used. A minimum conductor size of 28 AWG should be used to minimize noise effects.
Suggested nonshielded flat cable part numbers are:
Flat cable - 35M-3365-50
Twisted pair - Spectra Twist in flat 455-248-50
Equivalent parts may be used.
11.6.3 Connector requirements
11.6.3.1 Mating connectors
The nonshielded cable connector shall be a 50 conductor connector consisting of two rows of 25 female
contacts with adjacent contents 100 mils apart.
Recommended Mating Flat Cable Connector Part Numbers are:
Closed end 3M-3425-7000 W/O Strain Relief, No Center Key
(for cable ends)* 3M-3425-7050 With Strain Relief, No Center Key
Dupont-66900-290 With Strain Relief, With Center Key
Open end 3M-3425-6000 W/O Strain Relief, No Center Key
(In Daisy-chain) 3M-3425-6050 With Strain Relief, No Center Key
Dupont-66900-250 With Strain Relief, With Center Key
*See Figure 11.6.3-2.
The drive device connector is a nonshielded 50 conductor connector consisting of two rows of 25 male pins
with adjacent pins 100 mils apart. The connector is keyed (see Figure 11.6.3-1).
11.6.3.2 J2 Jumper plug part number
Option select header connector J2 on the PCB (see Figure 10.1-1b) uses an unusual type of jumper plug, so
its part number is given here for reference:
Molex 52747-0211 (Seagate P/N 77670952).